body,
div,
h1 {
    color: #504b48;
    font-family: 'Microsoft YaHei'
}

.banner {
    height: 550px;
    min-width: 970px;
}

.banner.style1 {
    background-image: url(../img_pc/bg-product.jpg);
    text-align: center;
    background-size: auto 100%;
    background-repeat: no-repeat;
    background-position: center;
}

.banner.style1 h1 {
    font-size: 56px;
    font-family: '黑体';
    margin-top: 65px;
    margin-bottom: 32px;
    font-weight: 600;
    margin-top: 76px;
    margin-bottom: 16px;
}

.banner.style1 .des {
    margin-top: 20px;
    margin-bottom: 20px;
}
.banner.style1 .des img {
    width: 150px;
}

.banner.style1 .des .txt {
    font-size: 16px;
    margin-top: 12px;
}

.banner .container {
    padding: 0 75px;
}

.banner.style2 {
    background: #f1f1f1;
}

.banner.style2 .right,
.banner.style3 .left {
    height: 550px;
    position: relative;
    overflow-y: hidden;
}

.banner.style2 .right img {
    position: absolute;
    bottom: -120px;
    left: 50%;
    margin-left: -197px;
}

.banner.style3 .left img {
    position: absolute;
    top: -120px;
    right: 50%;
    margin-right: -197px;
}

.banner.style4 {
    background-image: url(../img_pc/bg-product-2.jpg);
    background-position: bottom;
    background-size: cover;
    text-align: center;
}

.banner.style4 h1 {
    font-size: 56px;
    font-family: '黑体';
    font-weight: 600;
    margin-top: 165px;
    margin-bottom: 32px;
}

.banner.style4 h3 {
    font-family: 'Microsoft YaHei';
    margin: 0;
}

.banner.style4 .des img {
    margin-top: 30px;
    margin-bottom: 20px;
    width: 150px;
}

.banner.style4 .des .txt {
    font-size: 16px;
}

@media (min-width: 768px) {
    .container {
        max-width: 1170px
    }
}

.banner.style1 .txt {
    font-size: 24px;
    line-height: 2em;
}

.banner.style1 .txt>div {
    color: #a89e99;
}

.banner.style1 .txt>div:first-child {
    font-size: 38px;
}

.banner.style2 h1,
.banner.style3 h1 {
    font-size: 38px;
    margin-top: 130px;
}

.banner.style2 .left .txt,
.banner.style3 .right .txt {
    color: #a89e99;
    line-height: 2em;
    font-size: 24px;
}

.banner.style3 .right .txt,
.banner.style3 .right h1 {
    text-align: right;
}

.banner .left,
.banner .right {
    float: left;
}

.banner.style2 .left,
.banner.style3 .right {
    width: 56%;
}

.banner.style3 .left,
.banner.style2 .right {
    width: 44%;
}

.ani.banner.style2 img,
.ani.banner.style3 img {
    animation-play-state: running;
}

.banner.style2 img,
.banner.style3 img {
    -webkit-animation-duration: 2.4s;
    animation-duration: 2.4s;
    -webkit-animation-fill-mode: both;
    animation-fill-mode: both;
    transition-timing-function: ease-in-out;
    animation-play-state: paused;
}

.banner.style2 .right img {
    -webkit-animation-name: up;
    animation-name: up;
}

.banner.style3 .left img {
    -webkit-animation-name: down;
    animation-name: down;
}

@-webkit-keyframes up {
    0% {
        -webkit-transform: translate3d(0, 0, 0);
        transform: translate3d(0, 0, 0);
        opacity: 0;
    }
    50% {
        -webkit-transform: translate3d(0, -9%, 0);
        transform: translate3d(0, -9%, 0);
    }
    100% {
        -webkit-transform: translate3d(0, 0, 0);
        transform: translate3d(0, 0, 0);
        opacity: 1;
    }
}

@keyframes up {
    0% {
        -webkit-transform: translate3d(0, 0, 0);
        transform: translate3d(0, 0, 0);
    }
    50% {
        -webkit-transform: translate3d(0, -9%, 0);
        transform: translate3d(0, -9%, 0);
    }
    100% {
        -webkit-transform: translate3d(0, 0, 0);
        transform: translate3d(0, 0, 0);
    }
}

@-webkit-keyframes down {
    0% {
        -webkit-transform: translate3d(0, 0, 0);
        transform: translate3d(0, 0, 0);
    }
    50% {
        -webkit-transform: translate3d(0, 9%, 0);
        transform: translate3d(0, 9%, 0);
    }
    100% {
        -webkit-transform: translate3d(0, 0, 0);
        transform: translate3d(0, 0, 0);
    }
}

@keyframes down {
    0% {
        -webkit-transform: translate3d(0, 0, 0);
        transform: translate3d(0, 0, 0);
    }
    50% {
        -webkit-transform: translate3d(0, 9%, 0);
        transform: translate3d(0, 9%, 0);
    }
    100% {
        -webkit-transform: translate3d(0, 0, 0);
        transform: translate3d(0, 0, 0);
    }
}
